Service Manual

No.
1/0
P.in"Name
Function
147
1/0
COlO
C-bus data bit I 0
148
1/0
COil
C-bus data bit 11
149
- VOO +5V Power supply
ISO
1/0
CDI2
C-bus data bit 12
151
-
VSS GNO
152
1/0
CDI3
C-bus data bit 13
153 1!0
CDI4
C-bus data bit 14
154
1/0
CDIS C-bus data bit 15
155 1/0
C016
C-bus data bit 16
!56
1/0
CDI7 C-bus data bit 17
157
-
vss GND
!58
1/0
CDI8
C-bus data bit
18
!59
1!0
CDI9
C-bus data bit
19
160
-
VOO
+5V Power supply
161
1/0
C020
C-bus data bit 20
162
1/0 C02!
C-bus data bit 21
163
1/0
C022
C-bus data bit 22
164
-
VSS GND
165
1!0
CD23
C-bus data bit 23
166
1!0
C024
C-bus data bit 24
167
1/0
CD25 C-bus data bit 25
168
1/0 CD26 C-bus data bit 26
169
1!0
CD27 C-bus data bit 27
170
-
VOO +5V Power supply
171
1/0
CD28 C-bus data bit 28
172
-
VSS
GNO
173
1!0
CD29 C-bus data bit 29
174
I/0
CD30
C-bus data bit 30
175
1/0
CD31 C-bus data bit 31
176
I
CCSI
C-bus chip select 1
177
I
CCS2
C-bus chip select 2
178
0
CCS3
C-bus chip select 3
179
-
VSS
GND
180 I
RESET
Initial reset
181
I
CLK28 System clock
182
1/0 CRDWR
C-bus read/write
183
I
CRO
C-bus read pulse
184
-
VDO +5V Power supply
185
1!0
CDQMUU
SDRAM
byte 0 (CD31-24) write pulse
186
IJO
CDQMUL
SDRAM
byte I (C023-I6) write pulse
187
I/0
CDQMLU
SDRAM
byte 2 (CD! 5-8) write pulse
188
I/0
C:DQMLL
SDRAM
byte 3 (C07-0) write pulse
189
-
VSS
GND
190
0
RAS
·-
SDRAMRAS
191
0
CAS
SDRAMCAS
192
0
CWAIT
C-bus external wait
193
- VDO
+5V Power supply
194
I
CIVECF
C-bus interrupt vector fetch sycle
195
0
CIRLO
C-bus external interrupt factor 0
196
0
CIRLI
C-bus external interrupt factor 1
197
0
CIRL2
C-bus external interrupt factor 2
198
0
CIRL3
C-bus external interrupt factor 3
199
- VSS GND
200
0
CBREO
C-bus right request
201 I
CBACK
C-bus right acknowiedge
202 I
MIREQ
System
manager interrupt
203
0
AA25
A-bus address bit
25
204
I/0
ADO A-bus data bit 0
205
l/0
AD!
A-bus data bit I
206
I/0
AD2 A-bus data bit 2
207
1!0
AD3
A-bus data bit 3
208
-
VDO
+5V Power supply
-40-